Editing Sex-selective abortion (section)

=== Missing women ===
{{Main|Missing women}}
The idea of "missing women" was first suggested by Amartya Sen, one of the first scholars to study high sex ratios and their causes globally, in 1990. In order to illustrate the gravity of the situation, he calculated the number of women that were not alive because of sex-selective abortion or discriminatory practices. He found that there were 11 percent fewer women than there "should" have been, if China had the natural sex ratio. This figure, when combined with statistics from around the world, led to a finding of over 100 million missing women. In other words, by the early 1990s, the number of missing women was "larger than the combined casualties of all famines in the twentieth century" (Sen 1990).<ref name= "Sen_1990" />

This has led to particular concern due to a critical shortage of wives. In some rural areas, there is already a shortage of women, which is tied to migration into urban areas (Park and Cho 1995).<ref name= ParkCho>{{cite journal | vauthors = Park CB, Cho NH | year = 1995 | title = Consequences of son preference in a low- fertility society:Imbalance of the sex ratio at birth in Korea | journal = Population and Development Review | volume = 21 | issue = 1| pages = 59–84 | doi=10.2307/2137413| jstor = 2137413 }}</ref> In [[South Korea]] and [[Taiwan]], high male sex ratios and declining birth rates over several decades have led to cross-cultural marriage between local men and foreign women from countries such as mainland China, Vietnam and the Philippines.<ref>{{cite news | url=https://www.nytimes.com/2007/02/22/world/asia/22brides.html?pagewanted=all | work=The New York Times | vauthors = Onishi N | title=Korean Men Use Brokers to Find Brides in Vietnam | date=February 22, 2007 | access-date=February 23, 2017 | archive-date=November 4, 2017 | archive-url=https://web.archive.org/web/20171104102845/http://www.nytimes.com/2007/02/22/world/asia/22brides.html?pagewanted=all | url-status=live }}</ref> However, sex-selective abortion is not the only cause of this phenomenon; it is also related to migration and declining fertility.<ref name= ParkCho />